ui_shared.c

quakeIII源码这个不用我多说吧

menuDef_t *Menus_FindByName(const char *p) {
  int i;
  for (i = 0; i < menuCount; i++) {
    if (Q_stricmp(Menus[i].window.name, p) == 0) {
      return &Menus[i];
    } 
  }
  return NULL;
}

void Menus_ShowByName(const char *p) {
	menuDef_t *menu = Menus_FindByName(p);
	if (menu) {
		Menus_Activate(menu);
	}
}

void Menus_OpenByName(const char *p) {
  Menus_ActivateByName(p);
}

static void Menu_RunCloseScript(menuDef_t *menu) {
	if (menu && menu->window.flags & WINDOW_VISIBLE && menu->onClose) {
		itemDef_t item;
    item.parent = menu;
    Item_RunScript(&item, menu->onClose);
	}
}

void Menus_CloseByName(const char *p) {
  menuDef_t *menu = Menus_FindByName(p);
  if (menu != NULL) {
		Menu_RunCloseScript(menu);
		menu->window.flags &= ~(WINDOW_VISIBLE | WINDOW_HASFOCUS);
  }
}

void Menus_CloseAll() {
  int i;
  for (i = 0; i < menuCount; i++) {
		Menu_RunCloseScript(&Menus[i]);
		Menus[i].window.flags &= ~(WINDOW_HASFOCUS | WINDOW_VISIBLE);
  }
}


void Script_Show(itemDef_t *item, char **args) {
  const char *name;
  if (String_Parse(args, &name)) {
    Menu_ShowItemByName(item->parent, name, qtrue);
  }
}

void Script_Hide(itemDef_t *item, char **args) {
  const char *name;
  if (String_Parse(args, &name)) {
    Menu_ShowItemByName(item->parent, name, qfalse);
  }
}

void Script_FadeIn(itemDef_t *item, char **args) {
  const char *name;
  if (String_Parse(args, &name)) {
    Menu_FadeItemByName(item->parent, name, qfalse);
  }
}

void Script_FadeOut(itemDef_t *item, char **args) {
  const char *name;
  if (String_Parse(args, &name)) {
    Menu_FadeItemByName(item->parent, name, qtrue);
  }
}



void Script_Open(itemDef_t *item, char **args) {
  const char *name;
  if (String_Parse(args, &name)) {
    Menus_OpenByName(name);
  }
}

void Script_ConditionalOpen(itemDef_t *item, char **args) {
	const char *cvar;
	const char *name1;
	const char *name2;
	float           val;

	if ( String_Parse(args, &cvar) && String_Parse(args, &name1) && String_Parse(args, &name2) ) {
		val = DC->getCVarValue( cvar );
		if ( val == 0.f ) {
			Menus_OpenByName(name2);
		} else {
			Menus_OpenByName(name1);
		}
	}
}

void Script_Close(itemDef_t *item, char **args) {
  const char *name;
  if (String_Parse(args, &name)) {
    Menus_CloseByName(name);
  }
}

void Menu_TransitionItemByName(menuDef_t *menu, const char *p, rectDef_t rectFrom, rectDef_t rectTo, int time, float amt) {
  itemDef_t *item;
  int i;
  int count = Menu_ItemsMatchingGroup(menu, p);
  for (i = 0; i < count; i++) {
    item = Menu_GetMatchingItemByNumber(menu, i, p);
    if (item != NULL) {
      item->window.flags |= (WINDOW_INTRANSITION | WINDOW_VISIBLE);
      item->window.offsetTime = time;
			memcpy(&item->window.rectClient, &rectFrom, sizeof(rectDef_t));
			memcpy(&item->window.rectEffects, &rectTo, sizeof(rectDef_t));
			item->window.rectEffects2.x = abs(rectTo.x - rectFrom.x) / amt;
			item->window.rectEffects2.y = abs(rectTo.y - rectFrom.y) / amt;
			item->window.rectEffects2.w = abs(rectTo.w - rectFrom.w) / amt;
			item->window.rectEffects2.h = abs(rectTo.h - rectFrom.h) / amt;
      Item_UpdatePosition(item);
    }
  }
}


void Script_Transition(itemDef_t *item, char **args) {
  const char *name;
	rectDef_t rectFrom, rectTo;
  int time;
	float amt;

  if (String_Parse(args, &name)) {
    if ( Rect_Parse(args, &rectFrom) && Rect_Parse(args, &rectTo) && Int_Parse(args, &time) && Float_Parse(args, &amt)) {
      Menu_TransitionItemByName(item->parent, name, rectFrom, rectTo, time, amt);
    }
  }
}


void Menu_OrbitItemByName(menuDef_t *menu, const char *p, float x, float y, float cx, float cy, int time) {
  itemDef_t *item;
  int i;
  int count = Menu_ItemsMatchingGroup(menu, p);
  for (i = 0; i < count; i++) {
    item = Menu_GetMatchingItemByNumber(menu, i, p);
    if (item != NULL) {
      item->window.flags |= (WINDOW_ORBITING | WINDOW_VISIBLE);
      item->window.offsetTime = time;
      item->window.rectEffects.x = cx;
      item->window.rectEffects.y = cy;
      item->window.rectClient.x = x;
      item->window.rectClient.y = y;
      Item_UpdatePosition(item);
    }
  }
}


void Script_Orbit(itemDef_t *item, char **args) {
  const char *name;
  float cx, cy, x, y;
  int time;

  if (String_Parse(args, &name)) {
    if ( Float_Parse(args, &x) && Float_Parse(args, &y) && Float_Parse(args, &cx) && Float_Parse(args, &cy) && Int_Parse(args, &time) ) {
      Menu_OrbitItemByName(item->parent, name, x, y, cx, cy, time);
    }
  }
}



void Script_SetFocus(itemDef_t *item, char **args) {
  const char *name;
  itemDef_t *focusItem;

  if (String_Parse(args, &name)) {
    focusItem = Menu_FindItemByName(item->parent, name);
    if (focusItem && !(focusItem->window.flags & WINDOW_DECORATION) && !(focusItem->window.flags & WINDOW_HASFOCUS)) {
      Menu_ClearFocus(item->parent);
      focusItem->window.flags |= WINDOW_HASFOCUS;
      if (focusItem->onFocus) {
        Item_RunScript(focusItem, focusItem->onFocus);
      }
      if (DC->Assets.itemFocusSound) {
        DC->startLocalSound( DC->Assets.itemFocusSound, CHAN_LOCAL_SOUND );
      }
    }
  }
}

void Script_SetPlayerModel(itemDef_t *item, char **args) {
  const char *name;
  if (String_Parse(args, &name)) {
    DC->setCVar("team_model", name);
  }
}

void Script_SetPlayerHead(itemDef_t *item, char **args) {
  const char *name;
  if (String_Parse(args, &name)) {
    DC->setCVar("team_headmodel", name);
  }
}

void Script_SetCvar(itemDef_t *item, char **args) {
	const char *cvar, *val;
	if (String_Parse(args, &cvar) && String_Parse(args, &val)) {
		DC->setCVar(cvar, val);
	}
	
}

void Script_Exec(itemDef_t *item, char **args) {
	const char *val;
	if (String_Parse(args, &val)) {
		DC->executeText(EXEC_APPEND, va("%s ; ", val));
	}
}

void Script_Play(itemDef_t *item, char **args) {
	const char *val;
	if (String_Parse(args, &val)) {
		DC->startLocalSound(DC->registerSound(val, qfalse), CHAN_LOCAL_SOUND);
	}
}

void Script_playLooped(itemDef_t *item, char **args) {
	const char *val;
	if (String_Parse(args, &val)) {
		DC->stopBackgroundTrack();
		DC->startBackgroundTrack(val, val);
	}
}


commandDef_t commandList[] =
{
  {"fadein", &Script_FadeIn},                   // group/name
  {"fadeout", &Script_FadeOut},                 // group/name
  {"show", &Script_Show},                       // group/name
  {"hide", &Script_Hide},                       // group/name
  {"setcolor", &Script_SetColor},               // works on this
  {"open", &Script_Open},                       // menu
	{"conditionalopen", &Script_ConditionalOpen},	// menu
  {"close", &Script_Close},                     // menu
  {"setasset", &Script_SetAsset},               // works on this
  {"setbackground", &Script_SetBackground},     // works on this
  {"setitemcolor", &Script_SetItemColor},       // group/name
  {"setteamcolor", &Script_SetTeamColor},       // sets this background color to team color
  {"setfocus", &Script_SetFocus},               // sets this background color to team color
  {"setplayermodel", &Script_SetPlayerModel},   // sets this background color to team color
  {"setplayerhead", &Script_SetPlayerHead},     // sets this background color to team color
  {"transition", &Script_Transition},           // group/name
  {"setcvar", &Script_SetCvar},           // group/name
  {"exec", &Script_Exec},           // group/name
  {"play", &Script_Play},           // group/name
  {"playlooped", &Script_playLooped},           // group/name
  {"orbit", &Script_Orbit}                      // group/name
};

int scriptCommandCount = sizeof(commandList) / sizeof(commandDef_t);


void Item_RunScript(itemDef_t *item, const char *s) {
  char script[1024], *p;
  int i;
  qboolean bRan;
  memset(script, 0, sizeof(script));
  if (item && s && s[0]) {
    Q_strcat(script, 1024, s);
    p = script;
    while (1) {
      const char *command;
      // expect command then arguments, ; ends command, NULL ends script
      if (!String_Parse(&p, &command)) {
        return;
      }

      if (command[0] == ';' && command[1] == '\0') {
        continue;
      }

      bRan = qfalse;
      for (i = 0; i < scriptCommandCount; i++) {
        if (Q_stricmp(command, commandList[i].name) == 0) {
          (commandList[i].handler(item, &p));
          bRan = qtrue;
          break;
        }
      }
      // not in our auto list, pass to handler
      if (!bRan) {
        DC->runScript(&p);
      }
    }
  }
}


qboolean Item_EnableShowViaCvar(itemDef_t *item, int flag) {
  char script[1024], *p;
  memset(script, 0, sizeof(script));
  if (item && item->enableCvar && *item->enableCvar && item->cvarTest && *item->cvarTest) {
		char buff[1024];
	  DC->getCVarString(item->cvarTest, buff, sizeof(buff));

    Q_strcat(script, 1024, item->enableCvar);
    p = script;
    while (1) {
      const char *val;
      // expect value then ; or NULL, NULL ends list
      if (!String_Parse(&p, &val)) {
				return (item->cvarFlags & flag) ? qfalse : qtrue;
      }

      if (val[0] == ';' && val[1] == '\0') {
        continue;
      }

			// enable it if any of the values are true
			if (item->cvarFlags & flag) {
        if (Q_stricmp(buff, val) == 0) {
					return qtrue;
				}
			} else {
				// disable it if any of the values are true
        if (Q_stricmp(buff, val) == 0) {
					return qfalse;
				}
			}

    }
		return (item->cvarFlags & flag) ? qfalse : qtrue;
  }
	return qtrue;
}


// will optionaly set focus to this item 
qboolean Item_SetFocus(itemDef_t *item, float x, float y) {
	int i;
	itemDef_t *oldFocus;
	sfxHandle_t *sfx = &DC->Assets.itemFocusSound;
	qboolean playSound = qfalse;
	menuDef_t *parent; // bk001206: = (menuDef_t*)item->parent;
	// sanity check, non-null, not a decoration and does not already have the focus
	if (item == NULL || item->window.flags & WINDOW_DECORATION || item->window.flags & WINDOW_HASFOCUS || !(item->window.flags & WINDOW_VISIBLE)) {
		return qfalse;
	}

	// bk001206 - this can be NULL.
	parent = (menuDef_t*)item->parent; 
      
	// items can be enabled and disabled based on cvars
	if (item->cvarFlags & (CVAR_ENABLE | CVAR_DISABLE) && !Item_EnableShowViaCvar(item, CVAR_ENABLE)) {
		return qfalse;
	}

	if (item->cvarFlags & (CVAR_SHOW | CVAR_HIDE) && !Item_EnableShowViaCvar(item, CVAR_SHOW)) {
		return qfalse;
	}

	oldFocus = Menu_ClearFocus(item->parent);

	if (item->type == ITEM_TYPE_TEXT) {
		rectDef_t r;
		r = item->textRect;
		r.y -= r.h;
		if (Rect_ContainsPoint(&r, x, y)) {
			item->window.flags |= WINDOW_HASFOCUS;
			if (item->focusSound) {
				sfx = &item->focusSound;
			}
			playSound = qtrue;
		} else {
			if (oldFocus) {
				oldFocus->window.flags |= WINDOW_HASFOCUS;
				if (oldFocus->onFocus) {
					Item_RunScript(oldFocus, oldFocus->onFocus);
				}
			}
		}
	} else {
	    item->window.flags |= WINDOW_HASFOCUS;
		if (item->onFocus) {
			Item_RunScript(item, item->onFocus);
		}
		if (item->focusSound) {
			sfx = &item->focusSound;
		}
		playSound = qtrue;
	}

	if (playSound && sfx) {
		DC->startLocalSound( *sfx, CHAN_LOCAL_SOUND );
	}

	for (i = 0; i < parent->itemCount; i++) {
		if (parent->items[i] == item) {
			parent->cursorItem = i;
			break;
		}
	}

	return qtrue;
}

int Item_ListBox_MaxScroll(itemDef_t *item) {
	listBoxDef_t *listPtr = (listBoxDef_t*)item->typeData;
	int count = DC->feederCount(item->special);
	int max;

	if (item->window.flags & WINDOW_HORIZONTAL) {
		max = count - (item->window.rect.w / listPtr->elementWidth) + 1;
	}
	else {
		max = count - (item->window.rect.h / listPtr->elementHeight) + 1;
	}
	if (max < 0) {
		return 0;
	}
	return max;
}

int Item_ListBox_ThumbPosition(itemDef_t *item) {
	float max, pos, size;
	listBoxDef_t *listPtr = (listBoxDef_t*)item->typeData;

	max = Item_ListBox_MaxScroll(item);
	if (item->window.flags & WINDOW_HORIZONTAL) {
		size = item->window.rect.w - (SCROLLBAR_SIZE * 2) - 2;
		if (max > 0) {
			pos = (size-SCROLLBAR_SIZE) / (float) max;
		} else {
			pos = 0;
		}
		pos *= listPtr->startPos;
		return item->window.rect.x + 1 + SCROLLBAR_SIZE + pos;
	}
	else {
		size = item->window.rect.h - (SCROLLBAR_SIZE * 2) - 2;
		if (max > 0) {
			pos = (size-SCROLLBAR_SIZE) / (float) max;
		} else {
			pos = 0;
		}
		pos *= listPtr->startPos;
		return item->window.rect.y + 1 + SCROLLBAR_SIZE + pos;
	}
}

int Item_ListBox_ThumbDrawPosition(itemDef_t *item) {
	int min, max;

	if (itemCapture == item) {
		if (item->window.flags & WINDOW_HORIZONTAL) {
			min = item->window.rect.x + SCROLLBAR_SIZE + 1;
			max = item->window.rect.x + item->window.rect.w - 2*SCROLLBAR_SIZE - 1;
			if (DC->cursorx >= min + SCROLLBAR_SIZE/2 && DC->cursorx <= max + SCROLLBAR_SIZE/2) {
				return DC->cursorx - SCROLLBAR_SIZE/2;
			}
			else {
				return Item_ListBox_ThumbPosition(item);
			}
		}
		else {
			min = item->window.rect.y + SCROLLBAR_SIZE + 1;
			max = item->window.rect.y + item->window.rect.h - 2*SCROLLBAR_SIZE - 1;
			if (DC->cursory >= min + SCROLLBAR_SIZE/2 && DC->cursory <= max + SCROLLBAR_SIZE/2) {
				return DC->cursory - SCROLLBAR_SIZE/2;
			}
			else {
				return Item_ListBox_ThumbPosition(item);
			}
		}
	}
	else {
		return Item_ListBox_ThumbPosition(item);
	}
}

float Item_Slider_ThumbPosition(itemDef_t *item) {
	float value, range, x;
	editFieldDef_t *editDef = item->typeData;

	if (item->text) {
		x = item->textRect.x + item->textRect.w + 8;
	} else {
		x = item->window.rect.x;
	}

	if (editDef == NULL && item->cvar) {
		return x;
	}